T2 Diamond Core Drill Bits with Diameter 101, 86, 76, 66, 56mm
T2 series core bits are used for surface exploration with the T2 series core barrel.
The main crown technical parameters of impregnated diamond core bits include diamond grade,size,
concentrarion and quality,matrix hardness and crown shapes. The users can make rational selections according to the formations to be drilled.
To avoid excessive bit wear, tungsten carbide inserts are used on both sides on the waterway, and gage stones are a bit larger.
No. | Std. | Item | OD*ID(mm) | Crown Height | SN. |
1 | T2-46 | diamond bit | 46.0*31.7 | C6 | K3 K5 K7 K9 |
2 | T2-56 | diamond bit | 56.0*41.7 | C6 | K3 K5 K7 K9 |
3 | T2-66 | diamond bit | 66.0*51.7 | C6 | K3 K5 K7 K9 |
4 | T2-76 | diamond bit | 76.0*61.7 | C6 | K3 K5 K7 K9 |
5 | T2-86 | diamond bit | 86.0*71.7 | C6 | K3 K5 K7 K9 |
6 | T2-101 | diamond bit | 101.0*83.7 | C6 | K3 K5 K7 K9 |
7 | T6-76 | diamond bit | 76.0*57.0 | C6 C9 | K3 K5 K7 K9 |
8 | T6-86 | diamond bit | 86.0*67.0 | C6 C9 | K3 K5 K7 K9 |
9 | T6-101 | diamond bit | 101.0*79.0 | C6 C9 | K3 K5 K7 K9 |
10 | T6-116 | diamond bit | 116.0*93.0 | C6 C9 | K3 K5 K7 K9 |
11 | T6-131 | diamond bit | 131.0*108.0 | C6 C9 | K3 K5 K7 K9 |
12 | T6-146 | diamond bit | 146.0*123.0 | C6 C9 | K3 K5 K7 K9 |
13 | T6S-76 | diamond bit | 76.3*47.7 | C6 C9 | K3 K5 K7 K9 |
14* | T6S-86 | diamond bit | 86.3*57.7 | C6 C9 | K3 K5 K7 K9 |
15 | T6S-101 | diamond bit | 101.3*71.7 | C6 C9 | K3 K5 K7 K9 |
16 | T6S-116 | diamond bit | 116.3*85.7 | C6 C9 | K3 K5 K7 K9 |
17 | T6S-131 | diamond bit | 131.3*100.7 | C6 C9 | K3 K5 K7 K9 |
18 | T36 | diamond bit | 36.0*21.7 | C6 | K3 K5 K7 K9 |
19 | TT46 | diamond bit | 46.0*35.2 | C6 | K3 K5 K7 K9 |
20 | TT56 | diamond bit | 56.0*45.2 | C6 | K3 K5 K7 K9 |
Hardness table
Rock Type | Rock Hardness | Abrasiveness | Hardness NO. |
Clay,Shale,Ash Stone,Gypsum,Tuff,Serpentinite,Calcite, Coal,Argillite,Volcanics,Sandly Pebble | Soft | Medium | BST 1/3 |
Sandstone,Lithoid Limestone, Limonite | Medium Soft | Very High | BST 3/5 |
Medium Hard Sandstone,Hard Shale, Hard Ash Stone,Dolomitic,Marble,Hard Schist, Hard Streak Stone,Siltstone,Andestite | Medium | High | BST 5/7 |
Peridotite,Gneiss,Limonite | Medium Hard | Medium High | BST 7/9 |
Pegmatite,Schist,Norite,Syenite,Gabbro,Peridotite, Grandiorite,Granite,Basalt,Hard Streak Stone | Hard | Medium To Low | BST 9/11 |
Amphibolite,Diorite,Rhyolite,Quartzite | Very Hard | Medium To Low | BST 11 |
Silicious,Hard Sandstone,Rhyolite, Dense Quartzite,Ironstone,Taconite,Jasperite,Chert | Utral Hard | Low | BST 14 |